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Geodesic dome

Geodesic dome
Typically a geodesic dome design begins with an icosahedron inscribed in a hypothetical sphere, tiling each triangular face with smaller triangles, then projecting the vertices of each tile to the sphere. The endpoints of the links of the completed sphere are the projected endpoints on the sphere's surface. If this is done exactly, sub-triangle edge lengths take on many different values, requiring links of many sizes. To minimize this, simplifications are made. The result is a compromise of triangles with their vertices lying approximately on the sphere. The edges of the triangles form approximate geodesic paths over the surface of the dome. Geodesic designs can be used to form any curved, enclosed space. History[edit] The first dome that could be called "geodesic" in every respect was designed after World War I by Walther Bauersfeld,[1] chief engineer of the Carl Zeiss optical company, for a planetarium to house his planetarium projector. Methods of construction[edit] Dome homes[edit] is:

Related:  DOME CONSTRUCTIONdome & sphereHistory / Knowledge

Dome Software and Resources Geodesic Dome Software Quickly and easily create computer models of triangular panel domes with DomeMaker 3D. Print out templates for use as paper models or plans for full scale panels. For more advanced dome designs, you can also create kite and rhombus panel domes using DomeMaker Pro. Brain Researchers Can Detect Who We Are Thinking About Scientists scanning the human brain can now tell whom a person is thinking of, the first time researchers have been able to identify what people are imagining from imaging technologies. Work to visualize thought is starting to pile up successes. Recently, scientists have used brain scans to decode imagery directly from the brain, such as what number people have just seen and what memory a person is recalling. They can now even reconstruct videos of what a person has watched based on their brain activity alone. Cornell University cognitive neuroscientist Nathan Spreng and his colleagues wanted to carry this research one step further by seeing if they could deduce the mental pictures of people that subjects conjure up in their heads. “We are trying to understand the physical mechanisms that allow us to have an inner world, and a part of that is how we represent other people in our mind,” Spreng says.

2v Dome calculation tools Enter the radius or height of the dome, then click the calculate button. Hub and strutt constructionTo build a 2v geodesic dome framework you will need: 30 lengths of 'A' size struts 35 lengths of 'B' size struts 6 five way hubs 10 six way hubs 10 four way hubs - around the base of the dome. Use the diagram below to assist with assembly Panelised construction

Walther Bauersfeld Walther Bauersfeld (23 January 1879 in Berlin – 28 October 1959 in Heidenheim an der Brenz) was a German engineer, employed by the Zeiss Corporation, who, on a suggestion by the German astronomer Max Wolf, started work on the first projection planetarium in 1912. This work was stopped by military needs during World War I, but resumed after the war. Bauersfeld completed the first planetarium, known as the Zeiss I model in 1923, and it was initially placed on the roof of a Zeiss building in the corporate headquarters town of Jena.[1] This model projected 4,900 stars, and was limited to showing the sky only from Jena's latitude. Subsequently, Bauersfeld developed the Model 2 with 8,956 stars, and full latitude capability.

Centralia, Pennsylvania All properties in the borough were claimed under eminent domain and therein condemned by the Commonwealth of Pennsylvania in 1992 and Centralia's ZIP code was revoked by the Postal Service in 2002.[6] State and local officials reached an agreement with the remaining residents on October 29, 2013, allowing them to live out their lives there, after which the rights of their properties will be taken through eminent domain.[7] History[edit] Early history[edit] Many of the Native American tribes endemic to what is now Columbia County sold the land that makes up Centralia to colonial agents in 1749 for the sum of five hundred pounds. In 1770, during the construction of the Reading Road, which stretched from Reading to Fort Augusta (present-day Sunbury), settlers surveyed and explored the land.

Tutorial #3: The icosahedron-based geodesic sphere The content that follows was originally published on the Don Havey website at This quick tutorial will show a more reasonable alternative to the electronsphere, which addressed the problem of distributing points evenly on a sphere. We’ll be creating a geodesic sphere (like at the Epcot center) using a subdivided icosahedron. It’s a relatively simple script and inexpensive in terms of CPU usage. Much more efficient than the electronsphere approach, though not quite as interesting. And here are the classes you’ll need: Icosahedron classes 6 Ridiculous Lies You Believe About the Founding of America When it comes to the birth of America, most of us are working from a stew of elementary school history lessons, Westerns and vague Thanksgiving mythology. And while it's not surprising those sources might biff a couple details, what's shocking is how much less interesting the version we learned was. It turns out our teachers, Hollywood and whoever we got our Thanksgiving mythology from (Big Turkey?) all made America's origin story far more boring than it actually was for some very disturbing reasons. For instance ... #6.

The most beautiful suicide On May 1, 1947, Evelyn McHale leapt to her death from the observation deck of the Empire State Building. Photographer Robert Wiles took a photo of McHale a few minutes after her death. The photo ran a couple of weeks later in Life magazine accompanied by the following caption: On May Day, just after leaving her fiancé, 23-year-old Evelyn McHale wrote a note. SFMoMA Exhibit: “The Utopian Impulse: Buckminster Fuller and the Bay Area” If you are in the Bay Area this weekend, we recommend you stop in at the San Francisco Museum of Modern Art (SFMOMA) and check out their current exhibit The Utopian Impulse: Buckminster Fuller and the Bay Area. This exhibition is the first of its kind, featuring Buckminster Fuller’s most iconic projects as well a focus on his local design legacy in the Bay Area. Though he was never a resident, Fuller’s ideas inspired many local experiments in the realms of technology, engineering and sustainability. Continue reading for more information.

Stonewall riots The Stonewall Inn, taken September 1969. The sign in the window reads: "We homosexuals plead with our people to please help maintain peaceful and quiet conduct on the streets of the Village—Mattachine."[1] The Stonewall riots were a series of spontaneous, violent demonstrations by members of the gay (LGBT) community[note 1] against a police raid that took place in the early morning hours of June 28, 1969, at the Stonewall Inn, located in the Greenwich Village neighborhood of Manhattan, New York City. They are widely considered to constitute the single most important event leading to the gay liberation movement and the modern fight for LGBT rights in the United States.[2][3]

Natural Spaces Domes: SuperLoc Air enters at the bottom of the dome shell through a flared base vent skirt with screening, rises as it is warmed by the sun, and escapes out of the top low profile vent cupola. The air being vented carries with it any moisture-laden air that has migrated into the wall cavity from the inside of the dome. Most other dome companies ignore the condensation problem or simply don't know it exists. Floating Dome Home: Off-the-Grid Geodesic Island Retreat On its maiden voyage, this first-of-its-kind floating dome dwelling drifted lazily between Hamburg and Berlin and certainly made waves alongside Zendome‘s general release of Home Edition, its residential variant. Set upon a platform of welded frame-hull construction, it blends elements of a basic dock (easy to attach a sailboat to, for instance) and an outdoor deck to compliment the PVC-and-aluminum living and sleeping zone. Naturally stable due to its lightweight construction and low center of gravity, the dome itself easily weathered its trip, though for longer cruises on more open waters (rather than peaceful rivers) it is hard to say how it would really hold up. Still, while it might not have the sure footing or copious amenities of its land-based brethren, this water-going variant would certainly make for nice short stays and modest day drips up and down local canals … and besides, you can always take it down and reconstruct it on dry ground.

Two-Spirit "Berdache" redirects here. For the glaive polearm, see Bardiche. Two-Spirit (also two spirit or twospirit) is a modern umbrella term used by some indigenous North Americans to describe gender-variant individuals in their communities.[1] The term was adopted in 1990 at an Indigenous lesbian and gay international gathering to encourage the replacement of the anthropological term berdache.[2] It is a spiritual role that is recognized and confirmed by the Two-Spirit's indigenous community. While some have found the term a useful tool for intertribal organizing, not all Native cultures conceptualize gender this way, and most tribes use names in their own languages.[2][3] While pan-Indian terms are not always appropriate or welcome, the term has generally received more acceptance and use than the term it replaced.[2] Third and fourth gender roles traditionally embodied by two-spirit people include performing work and wearing clothing associated with both men and women. Terminology[edit]